Sheet metal door construction



2 1953 w. J. WILLIAMS El AL 2,664,182

SHEET METAL DOOR CONSTRUCTION Filed Nov. 30, 1951 3 Sheets-Sheet l 3 FIGS;

/ INVENTORS WARREN J. WILLIAMS &

CARL A. ANDERSON, BY

: ATTORNEY 1953 w. J. WILLIAMS ET AL 2,664,182

SHEET METAL DOOR CONSTRUCTION Filed Nov. 30, 1951 3 Sheets-Sheet 2 '2 FIG. 6. M FIG.7.

1 I!!! [111111 I I I I 1 1 1 I 1 1 11 1 1 v M lt ff? 21 25 Hum I INVENTORS WARREN J. WILLIAMS 8 CARL A. ANDERSON, av

\/ I I TORNEY 3 Sheets-Shet 3 HHIHHHIh.

w. J. WILLIAMS Er AL SHEET METAL DOOR CONSTRUCTION FIG. l3.

FIG. ll.

MIM

mUHU1- A Hllnmm...

Dec. 29, 1 953 Filed Nov. 30, 1951 INV TORS WARREN J. WF'LuAMs a CBQ' RL ANDERSON I ATTORNEY FIG.I4.

Patented Dec. 29, 1953 UNITED STATES PATENT OFFICE SHEET METAL DOOR CONSTRUCTION Warren J. Williams, Richmond Hill, N. Y., and Carl A. Anderson, Cranford, N. J.

Application November 30, 1951, Serial No. 2 59,062

.1 Claim. (01. 189-46) This invention relates to improvements in a sheet metal door construction and has particular reference to doors which are constructed by forming, of pressed sheet metal, a pair of practically similar units which are interlocked to form a door.

The object of this invention is the provision therein of a door constructed of a pair of basic elements which are interlocked and a minimum number of minor parts which are secured to the basic elements with a few spot or tack welds to fix all parts permanently together.

The invention consists of forming a pair of almost similar flanged panel members having guide and interlocking units formed upon the flanges of the panel members.

The best embodiment of the invention has been "chosen for illustrative purposes, but this embodiment should be viewed as being illustrative only and not as limiting because obviously the invention is capable of other embodiments having revised details of construction so long as they fall within the ambit of the appended claims.

The invention itself, however, both as to its organization and its method of operation, will best be understood from the following description of a specific embodiment when read in con nection with the accompanying drawing, in which:

Fig. 1 is an elevational view of a door constructed of members and assembled as outlined in this description of the invention.

Fig. 2 is a diagrammatic plan view taken along line 2--2 of Fig. 1, and outlines a door set between door jambs.

Fig. 3 is a perspective view of a fragment of a door in which a sectional portion is taken along line 3-3 of Fig. 5.

Fig. 4 is an enlarged sectional plan view of a door, with central portion of same broken away :and is also taken along line 22 of Fig. 1.

Fig. 5 is an enlarged sectional, elevational view :taken along line 55 of Figs. 1 and 4.

Fig. 6 is an enlarged fragmentary detail showing the end portion of a pair of opposing panel units about to be assembled.

'7 is a section along the broken line '!--'I of Fig. 6.

Fig. 8 is a view similar to Fig. 6 but shows the panel units assembled and interlocked.

Fig. 9 is a sectional view taken along line 9-9 of Fig. 8.

Fig. 10 is an inside plan view of a single panel nnit.

Fig. 11 is an salerational view, somewhat similar to Fig. 6, but showing the outer "surface 10f flanges formed along one edge oi thepanel units.

Fig. 12 is a cross section taken along the line I2-l2of Fig.11.

Fig. 13 is a view similar to Fig. I'ljbu't shows the flanges brought together and interlocked, and

Fig. 14 is an enlarged isometric perspective of one end of the panel units and shows'parts hroken away.

Referring in detail to the parts, in which similar letters represent similar parts throughout, II designates generally a door constructed of parts formed and assembled as outlined in this description and illustrated in the "drawings and forming the essential features of this invention. A pair of panels l2 and It (see Fig. 3) have flange formations l4 and I5 along the opposite longitudinal edges of the panel l2. The opposite edges of the panel I3 have flanges I6 and I1. When the two panels I2 and I3 are brought together the edges of the flanges I4 and I5 abut the edges of the flanges I6 and I? along the lines I8 and I9 respectively. In order to hold the opnosing flanges of the panel units together and lock them in place, there are provided elongated rectangular guide members 23 (see Figs. 3, 6 to 10 inclusive and 14), which are spaced upon and extend upwardly from the flange [6 of the panel l3. The said rectangular guide members 20 are integrally formed upon the flange I6 and are offset therefrom to form ledges 2! along their lower edges. Upon the opposing flange l4 there are integrally formed thereon spaced guide members 22 which are adapted to pass through the spaces between the guide members 29 and are integrally formed upon the flange M with offset ledges 23 formed along their upper edges. The guide members 22 are notched at one end, as at 24, to form fingers or hooking prongs 25, which prongs are adapted to engage under the ledges 2| upon the guide members 28. Fig. 6 shows the two panels I2 and I3 pulled apart with the guide members 22 in line with the spaces between the guide 23, just before assembly. The arrows X show the direction of movement when the two parts are brought together. Fig. 8 shows the two panels I2 and I3 assembled and the panel l2 carrying the guides 22 moved forward to slide the hooking prongs 25 under the ledges 2i and thereby lock the two panel plates I2 and I3 to-' gether along one edge; namely along the flanges I4 and I5.

Similar guide formations, difiering slightly as will be explained, are formed upon the flanges I5 and I7. Upon the said flanges l5 and [1 (Figs. 11, 13 and 14) ofiset rectangular guide members 20' are integrally formed and guide members 22 with hooking prongs 25' are integrally formed upon the flange l1 and ofiset therefrom. Figs. 3, 8 and 13 show the two panel members 12 and I3 as they appear when assembled and interlocked.

In Figs. 3 and 4 there is shown L-shaped reinforcing ribs 26 having one end 21 spot welded to the panel [2 and their inwardly extending face ends having a T-shaped formation 28. Similar L- and T-shaped reinforcing ribs 29 are spot welded to the panel l3 and extend inwardly therefrom. The reinforcing ribs 26 and 29 are interspaced as best shown in the diagram of Fig. 2. A door assembled as described has open top and bottom ends. To close these ends there is provided channel members 30 and 3| which are inserted at top and bottom (Fig, 5) respectively and are spot welded thereto. Over the channels 30 and 3| there are inserted finishing plates 32 and 33 respectively which are tack welded.

Depressed portions 34 are formed to provide recesses to receive hinges and a pocket 35 may be formed upon the opposite edge to receive a locking and latching member.

I claim:

A sheet metal door comprising two opposed flat walls, interlocking continuous flanges at right angles to the vertical sides of said flat walls, said flanges extending half the thickness of said door and adapted to abut each other, guide members offset the thickness of the sheet metal and extending from the edge of said flanges of said flat wells each of the guide members on said flanges of one flat wall having fingers for interlocking in parallel relationship with said guide members of the other of said flanges on the opposed flat wall. said guide members arranged alternately along said flanges, top and bottom channel members between said flat walls for reinforcing said door, T-shaped vertical reinforcing members, said reinforcing members having flanges for attaching said reinforcing members to the inner faces of said flat walls, said reinforcing members alternately attached to the inner faces of said opposed flat walls, the T-shaped end of each of said reinforcing members extending less than the thickness of said door.

WARREN J. WILLIAMS.

CARL A. ANDERSON.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,091,905 Zahner Mar. 31, 1914 1,174,401 Eckberg Mar. 7, 1916 1,554,395 Young Sept. 22, 1925 1,680,538 Gross Aug. 14, 1928 1,728,964 Gross Sept. 24, 1929 1,761,037 Gross June 3, 1930 1,848,715 Hart Mar. 8, 1932 2,297,609 Clark et al Sept. 29, 1942 2,349,195 Peele May 16, 1944 FOREIGN PATENTS Number Country Date 471,258 Great Britain Sept. 1, 1937 

